package example16;
class Animal {
    public void shout (){
        System.out.println("喵喵......");
    }
}
class Dog extends Animal {
    public void shout (){
        System.out.println("汪汪......");
    }
    public void eat (){
        System.out.println("吃骨头......");
    }
}
public class example16 {
     public static void main(String[] args) {
         Animal an = new Dog();
         Dog dog = (Dog) an;
         dog.shout();
         dog.eat();
     }
}
